Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 1 | #include <time.h> |
| 2 | #include <sys/time.h> |
| 3 | |
| 4 | #include "fio.h" |
| 5 | |
Jens Axboe | 263e529 | 2006-10-18 15:37:01 +0200 | [diff] [blame] | 6 | static struct timeval genesis; |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 7 | static unsigned long ns_granularity; |
Jens Axboe | 263e529 | 2006-10-18 15:37:01 +0200 | [diff] [blame] | 8 | |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 9 | /* |
| 10 | * busy looping version for the last few usec |
| 11 | */ |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 12 | uint64_t usec_spin(unsigned int usec) |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 13 | { |
| 14 | struct timeval start; |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 15 | uint64_t t; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 16 | |
Jens Axboe | 02bcaa8 | 2006-11-24 10:42:00 +0100 | [diff] [blame] | 17 | fio_gettime(&start, NULL); |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 18 | while ((t = utime_since_now(&start)) < usec) |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 19 | nop; |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 20 | |
| 21 | return t; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 22 | } |
| 23 | |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 24 | uint64_t usec_sleep(struct thread_data *td, unsigned long usec) |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 25 | { |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 26 | struct timespec req; |
| 27 | struct timeval tv; |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 28 | uint64_t t = 0; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 29 | |
| 30 | do { |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 31 | unsigned long ts = usec; |
| 32 | |
| 33 | if (usec < ns_granularity) { |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 34 | t += usec_spin(usec); |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 35 | break; |
| 36 | } |
| 37 | |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 38 | ts = usec - ns_granularity; |
| 39 | |
| 40 | if (ts >= 1000000) { |
| 41 | req.tv_sec = ts / 1000000; |
| 42 | ts -= 1000000 * req.tv_sec; |
| 43 | } else |
| 44 | req.tv_sec = 0; |
| 45 | |
| 46 | req.tv_nsec = ts * 1000; |
| 47 | fio_gettime(&tv, NULL); |
| 48 | |
| 49 | if (nanosleep(&req, NULL) < 0) |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 50 | break; |
| 51 | |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 52 | ts = utime_since_now(&tv); |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 53 | t += ts; |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 54 | if (ts >= usec) |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 55 | break; |
| 56 | |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 57 | usec -= ts; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 58 | } while (!td->terminate); |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 59 | |
| 60 | return t; |
Jens Axboe | 3c39a37 | 2006-06-06 20:56:12 +0200 | [diff] [blame] | 61 | } |
| 62 | |
Jens Axboe | e069899 | 2014-11-07 10:36:33 -0700 | [diff] [blame] | 63 | uint64_t time_since_genesis(void) |
| 64 | { |
| 65 | return time_since_now(&genesis); |
| 66 | } |
| 67 | |
Jens Axboe | aa60bc5 | 2013-01-04 13:24:52 +0100 | [diff] [blame] | 68 | uint64_t mtime_since_genesis(void) |
Jens Axboe | 263e529 | 2006-10-18 15:37:01 +0200 | [diff] [blame] | 69 | { |
| 70 | return mtime_since_now(&genesis); |
| 71 | } |
| 72 | |
Jens Axboe | 0de5b26 | 2014-02-21 15:26:01 -0800 | [diff] [blame] | 73 | uint64_t utime_since_genesis(void) |
| 74 | { |
| 75 | return utime_since_now(&genesis); |
| 76 | } |
| 77 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 78 | int in_ramp_time(struct thread_data *td) |
| 79 | { |
| 80 | return td->o.ramp_time && !td->ramp_time_over; |
| 81 | } |
| 82 | |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 83 | int ramp_time_over(struct thread_data *td) |
| 84 | { |
| 85 | struct timeval tv; |
| 86 | |
| 87 | if (!td->o.ramp_time || td->ramp_time_over) |
| 88 | return 1; |
| 89 | |
| 90 | fio_gettime(&tv, NULL); |
Jens Axboe | 0de5b26 | 2014-02-21 15:26:01 -0800 | [diff] [blame] | 91 | if (utime_since(&td->epoch, &tv) >= td->o.ramp_time) { |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 92 | td->ramp_time_over = 1; |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 93 | reset_all_stats(td); |
| 94 | td_set_runstate(td, TD_RAMP); |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 95 | return 1; |
| 96 | } |
| 97 | |
| 98 | return 0; |
| 99 | } |
| 100 | |
Bruce Cran | 03e20d6 | 2011-01-02 20:14:54 +0100 | [diff] [blame] | 101 | void fio_time_init(void) |
Jens Axboe | 263e529 | 2006-10-18 15:37:01 +0200 | [diff] [blame] | 102 | { |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 103 | int i; |
| 104 | |
Jens Axboe | c223da8 | 2010-03-24 13:23:53 +0100 | [diff] [blame] | 105 | fio_clock_init(); |
| 106 | |
Jens Axboe | fd84146 | 2007-01-13 12:20:30 +0100 | [diff] [blame] | 107 | /* |
| 108 | * Check the granularity of the nanosleep function |
| 109 | */ |
| 110 | for (i = 0; i < 10; i++) { |
| 111 | struct timeval tv; |
| 112 | struct timespec ts; |
| 113 | unsigned long elapsed; |
| 114 | |
| 115 | fio_gettime(&tv, NULL); |
| 116 | ts.tv_sec = 0; |
| 117 | ts.tv_nsec = 1000; |
| 118 | |
| 119 | nanosleep(&ts, NULL); |
| 120 | elapsed = utime_since_now(&tv); |
| 121 | |
| 122 | if (elapsed > ns_granularity) |
| 123 | ns_granularity = elapsed; |
| 124 | } |
Jens Axboe | 263e529 | 2006-10-18 15:37:01 +0200 | [diff] [blame] | 125 | } |
Jens Axboe | 6043c57 | 2006-11-03 11:37:47 +0100 | [diff] [blame] | 126 | |
Jens Axboe | a2f77c9 | 2007-02-22 11:53:00 +0100 | [diff] [blame] | 127 | void set_genesis_time(void) |
| 128 | { |
| 129 | fio_gettime(&genesis, NULL); |
| 130 | } |
| 131 | |
Jens Axboe | 6043c57 | 2006-11-03 11:37:47 +0100 | [diff] [blame] | 132 | void fill_start_time(struct timeval *t) |
| 133 | { |
| 134 | memcpy(t, &genesis, sizeof(genesis)); |
| 135 | } |